diaphragma sellae

noun
di·a·phrag·ma sel·lae | \ ˌdī-ə-ˈfrag-mə-ˈsel-ˌī , -ˌē \

Medical Definition of diaphragma sellae 

: a small horizontal fold of the dura mater that roofs over the sella turcica and contains a small opening for passage of the infundibulum

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